Coccura circumscripta (Kiritshenko)

MOGHADDAM, MASUMEH & WATSON, GILLIAN W., 2022, The Scale Insects Of Iran (Hemiptera: Coccomorpha) Part 2 The Mealybugs (Pseudococcidae And Rhizoecidae) And Putoidae, Zootaxa 5126 (1), pp. 1-169 : 41-42

Coccura circumscripta (Kiritshenko)

( Fig. 11 , distribution map Fig. 66 J )

Mediococcus circumscriptus Kiritshenko 1936: 144 . Coccura transcaspica Borchsenius, 1949: 304 .

Field characteristics: Body of adult female dark brown, up to 2.2 mm long (Danzig 2012).

Microscopic diagnosis: Slide-mounted adult female broadly oval, with head and prothorax tapering anteriorly. Antennae each with 8 segments. Anal lobes not developed. Legs developed but small for body size; hind leg without translucent pores; targal digitules each pointed at tip and shorter than claw; claw with a small denticle. Cerarii numbering 2 pairs; anal lobe cerarii (C 18) each with 2 large lanceolate setae and 1‒3 pores; C 17 represented by a single smaller lanceolate seta. Circuli numbering 3, situated on midline. Only posterior ostioles present, each lip without pores or setae. Anal ring situated on dorsum, slightly anterior to posterior margin of body, the ring containing incomplete rows of pores and spinulae and shortened setae ( Fig. 11 ).

Dorsum with small lanceolate setae. Multilocular pores absent. Trilocular pores and discoidal pores sparsely scattered. Oral collar tubular ducts, smaller than those on venter, present near margins.

Venter with small stiff setae. Multilocular disc pores each with seven loculi, present on median areas of posterior abdominal segments. Quinquelocular pores present on thorax and abdominal segments, somewhat concentrated near each spiracular opening. Trilocular pores scattered on margins. Bottle-shaped tubular ducts longer than those on dorsum, scattered.

Distribution: Coccura circumscripta has been recorded from 10 countries in the Palaearctic Region, including Iran ( García Morales et al. 2016), where it is known from Kerman province (Moghaddam 2015).

Host-plants:The species has been recorded on host-plants in two genera belonging to the families Amaranthaceae and Polygonaceae respectively ( García Morales et al. 2016); in Iran, it has been found on Noaea mucronata (Amaranthaceae) (Moghaddam 2015).

Economic importance: None.

Natural enemies: Not recorded in Iran.

Comments: Iranian specimens of C. circumscripta differ from those described from Russia by Danzig (2012) and Ter-Grigorian (1973) as follows (character states of the specimens described by the latter authors in brackets): (i) body about 3.65 mm long (2.2 mm long); (ii) antennae each 8 segmented (9 segmented); (iii) dorsal setae and cerarian setae lanceolate (conical); (iv) quinquelocular pores present medially on venter of thorax and abdominal segments I‒IV (only present on thoracic segments) (Moghaddam 2015).

The accompanying illustration is reproduced from Moghaddam (2015), page 125, Fig. 2 , with kind permission from the Chief Editor of Entomologica Fennica .

Genus DYSMICOCCUS Ferris

Dysmicoccus Ferris, 1950 b: 53 . Type species: Dactylopius brevipes Cockerell by original designation. Parkermicus Khalid & Shafee, 1988a: 31 .

Principal characters: Body elongate oval to broadly oval, membranous. Antennae each with 8 segments. Legs well developed, claw without a denticle. Cerarii numbering 6–17 pairs, preocular pair (C 2) always absent; each cerarius usually with no more than 5 or 6 enlarged conical and a few auxiliary setae, but auxiliary setae sometimes absent anterior to the penultimate pair of cerarii (C 17). Circulus present or absent. Ostioles present. Dorsal setae slender and flagellate, although there may be conical setae present in addition. Ventral surface of each anal lobe with or without a sclerotized area, but never with an anal lobe bar. Multilocular disc pores usually present on venter but sometimes absent. Oral rim tubular ducts absent. Oral collar tubular ducts present on venter, rarely on dorsum. Anal ring complete, with 2 rows of pores and 6 setae.

Comments: Worldwide, 138 species are included in Dysmicoccus ( García Morales et al. 2016) ; six species are known from Iran ( Moghaddam 2018).

Key to species of Dysmicoccus in Iran

1(0) Circulus present...................................................................................... 2

- Circulus absent...................................................................................... 4

2(1) Cerarii numbering at most 7 pairs, absent from thorax.......................................... boninsis (Kuwana)

- Cerarii numbering 11‒17 pairs, some present on thorax....................................................... 3

3(2) Hind leg with translucent pores on coxa only................................................ walkeri (Newstead)

- Hind leg with translucent pores absent from coxa, present on femur and tibia...................... brevipes (Cockerell)

4(1) Some dorsal and ventral oral collar tubular ducts forming groups of 3............................................ 5

- Some dorsal and ventral oral collar tubular ducts forming groups of 2............................. angustifrons (Hall)

5(4) Multilocular disc pores present on ventral submargins of abdominal segments IV and V but absent from medial areas of these segments......................................................................... zagrosicus Moghaddam

- Multilocular disc pores absent from ventral submargins of abdominal segments IV and V but a few present in medial areas, at least on segment V................................................................ caspianensis Moghaddam

Figures

FIGURE 2. Adult female of Antonina crawi Cockerell.

FIGURE 11. Adult female of Coccura circumscripta (Kiritshenko).

FIGURE 66. Maps of species distributions in Iran. A. Antonina crawi Cockerell; B. Antonina graminis (Maskell); C. Artemicoccus bispinus Borchsenius; D. Artemicoccus poacearum Moghaddam & Watson sp. n.; E. Brevennia (Brevennia) rehi (Lindinger); F. Ceroputo pilosellae Šulc; G. Chorizococcus pazoukii Moghaddam; H. Chorizococcus viticola Kaydan & Kozár; I. Coccidohystrix burumandi Moghaddam; J. Coccura circumscripta (Kiritshenko); K. Dysmicoccus angustifrons (Hall); L. Dysmicoccus boninsis (Kuwana).